I actually have to make this decision. And i'm leaning towards NU.
Hey, me too and me too (MD/PhD anyway).
UC has a better rep for research, but I'd say NU is a close second. It doesn't matter anyway if you find someone at either school you really want to work with (and I found at least one at NU).
I always hear that NU students don't get the great clinical exposure because Memorial is so "exclusive". I wonder about it, but because I'm MSTP it doesn't matter that much anyway.
Northwestern has a much more progressive cirriculum as you said. That's definately my style. The MSTP at UChicago seemed unduly stressful and the MSTP director unduly strange. They do claim some really high NIH site review scores (second behind Duke?), but I'm afraid I can't really see why. I was much more impressed with the integration and focus of Northwestern's MSTP.
And... 8 years in Hyde Park? Ugh. It's not even easy to get into downtown from there because mass transit stops are around Hyde Park, but not in it.
Edit: I stand corrected by Gumshoe. I simply meant that the "L" and the "metro" train systems do not actually go into Hyde Park near the school. Busses tend to run everywhere in and around a city. However, rapid transit systems like rail tend to get you where you want to go alot faster.
I should have stated that I would personally prefer something urban. My litmus test for whether a location is "urban" is whether you need a car to live there. I was told at my U of C interview that it would be very difficult to live there without one. If you want a more suburban environment, with close access to an urban environment, I think U of C would be better for you than Northwestern.